Type-writing machine.



. 7. I PATENTED'APR. v 1908.

0. E. YETMAN. W TYPE WRITING MAGHINE. APPLICATION FILED SEPT. 26, 1900.

9 SHEETS-SHEET 1.

II 884 347. PATENTED APR. 7 1908.,

o 0. E. YBTMAN.

TYPE WRITING MACHINE.

' 9 SHEETSSHEET 3.

J J J Q) APPLICATION FILED SEPT. 26,1900.

II J IL I; @Q)@ JIM 6a:

PATENTED APR. 7, 1908.

H aha W W @& J W 1 W1 9 O/m Nm K m mmm .YUH BMW a m Em PL Wm PATENTED APR. 7, 1908.

T E E H s T E E H S 9 Eu NW A .ww NAT A M s TGD E E :1 BMW T m Wm TM 7. HM M !w [HWHU I. 2 1a. 0 N. w T. m7

, PATENTED APR. 7 1908'. 0. E. YETMAN.

TYPE WRITING MACHINE APPLICATION FILED SEPT. 26.1900.

9 SHEETS-rSHEET 8.

"III/III.

PARK, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO OF NEW YORK, N. Y., A CORPORATION CHARLES E. YETMAN, OF OAK YETMAN TYPEWRlTER-TRANSMITTER COMPANY,

'OF NEW YORK.

rvrn-wiii'rme MACHINE.

Letters Patent. 1908.

No. 884,347. Specification of. Patented April 7,

Application filed September 26, 1900. Serial 110. 31,198.

T 0 all whom it may concern: detailsectional view in vertical longitudinal Ynriniii, i

Be it known that I, CHARLES E section through the comb-plates that supa resident of Oak Park, in the county of Cook port the key-levers and through the guides and State of lllinois, have invented certain therefor. Fig. 12 is a detail side view of a new and use ul Improvements in eortion 0 onekey lever showing means Writing Machines,,of which the following isa whereby the extent of movement iinpaite full, clear, and exact description. hereby to the universal bar maybe adjusted. This invention has relation more particu- Fig. 13 is a detail plan view of the parts larl to that class of typewriting machines shown in Fig. i. Fi 14 is a back view 0. in which the paper to be written upon is carthe front plate showing the type-bar cushion ried upon a cylindrical platen that is mountin position thereon. Fig. 15 is a view in vered on a traveling carriage adapted to have a step-by-step movement imparted thereto tical cross-section on line 15 15 of Fig. 14. Fig. 16 is an enlarged detail view in side eleb 1 suitable escapemei t mechanism and in vation of one of the type bars, its hanger ani which theprinting type are carried by. pivconnected parts, the hanger frame being oted type-bars actuated bv suitable key-leshown in cross-secti n. Fin. 17 is a view in O O vers having banks central vertical section through the type-bar at the front of the machine. hanger and parts carried thereby. Fig. 18 is The invention is shown as embodied in a aviewinverticallongitudinal section through machine ofthe style 'ble the type-bar,itsl anger and the hanger ame.

known as a visi frame of the machine may e of g finger pieces arranged. in

semi-circular opening at its front where it the extension (1. rom side to the base of the machine and near the front part of the upper portion A extends a cross-bar 2 (see Fig. 3), beneat which is sustained suitable studs, the cento the front edge of which are pivotally connected '0 b, the inner ends of the various key-levers B each 0 restricted to this particular class of typewriting machine.

. The invention consists in the various novel features of construction hereinafter described, the accompanying drawings, and articularly defined in the claims at the enr of this specification.

Figure 1 is a view in e evation of the righthand end of the'inachine. Fig. 2 is a view in typewriter, as the platen, type-bars etc., are The mai arranged in such osition that the printed any suitable construction, the frame shown line is exposed to t e operators view; but itcomprising a baseportion A and an upper will be understood that the invention is not ortion the upper portion having I e central longitudinal section (from front to these key-levers B being formed with an up- 35 rear) of the machine, one key lever only ewardly extending portion bthat is coning com letely shown. Fig. 3 is a view in nected by a suitable spring b to the crosshorizontal section on iiie 3 3 of Fi 2. bar-2, this spring serving to hold the key- Fig. 4 is a view in vertical section on line levers in normal position The forwarc il-of Fig. 2 with parts removed. Fig. 5 is ends of the key levers B are upturned an 40 a view in vertical section on line 55 of Fig. rovi ed 'th suitable finger pieces that are .4. Fig. 6 is a detail front view of the unioupedto ether in the key-board in ban rs versal bar, the key levers being shown in in the usua manner. Abo e and below the cross-section. Fig. 7 is a detail side view 0 comb-bar 3 and pa allel' therewith extend one of the end portions of the universal bar, the up er and lower pivot bars 5 and 6, these 7 45 arts adjacent thereto'being'shown nverti-i ivot ars being connected together (see cal section. F' 8 .is a detail view in side ig. 11) by suitable b olts7 that pass throng elevation of the mechanism for throwing the guide sleeves 8' mounted in the central combtype-bars out of' 'action. Fig. is a view i bar The up er andlower ivot bars 5 similar to Fig. 8, but with the parts in difierand 6 have coin -sha ed front portions s ud 50 cut osition Fig 10 is a detail rear view throu h the forwar y projecting teeth of (looking towards the front) of the throw-out these bars extend the pivot rods 0 of the shaft and adjacent parts, whereby the typesu plemental key-levers C an bars are hrown out ig. 11 is a y reference more particularly to Figs. 2,

provided with such of the drawings it wi Q asaea? be seen that equal distances apart by a s ace late 17 supplemental levers C and C is p p t at is mounted loosely upon thestud 12. By tiis means, I obtain a three-point rest for the typebars,' andthe bearing maybe finely adjusted to more accurately pivot the 4 and 5-of the drawings, it will each of the of the supplemental kc l C 18 connected y a suitable link 9 with its type bar D, these type bars ward y extending portion 6 of the corty e-bars, than would be the case if more res onding key-lever B. The upper end of ba ls were used. The offset lug d at the sac evers C and inner end of each of the type-bars is adapted hanger and to this lug is connected the corresponding coupling link 9 that unites the type-bar to its appropriate supplemental key lever C 'or C.

From the construction of arts as thus far hen the operator keylevers B key levers and su plemental levers and at a uniform distance om the printingpoint on. the platen W whereon the paper to be printed will be placed. By this arrangement, short key-levers and operating connections drawings),

' pivot point 6, thereby er portion 6 rinting point. (1 an anti-friction sup ort type-bar so that the eac type-bar can be Preferablya bent late 11 is interposed between the heads of the The ball hangers D although this for their corresponding is not essential to my invention. As shown, swinging movement of bar hangers D with a slot d through which passes-the ret taining screw 10. g y this construction, the type-bar hanger can be raised or lowered or In. placing the parts together for use, the set at any desired position, being held in bearin plates 13 and 14 and the space plate osition by the screw. The opposite 17 wit the ball in the position shown, end 0 each of the hangers Dis cleft or bifurwi or eye 16 at cated to form the arms (1 between which is th the threaded mounted the inner end of the corres type-bar D. Preferably the arms ed so as to allow an easy but accurate movement of the type-bar with-respect-t'o the bearplates, and these arts Will then be placed e ween the arms of the corres ondin type-bar hanger D and held in position by the rivet 12 which to be readily effected.

y reference more particularly to Fig.1?

1 be seen that the eripheries of the plates 13 and 14 inwardly and form a channel or ball-race to receive anti-friction balls 15and preferably also the circular opening or eye 16 that is formed at the inner end 0f the type bars D which is mounted to sw' g'in the plane of the ball-race of the hange mid-way etween the anger-arms is similarly beveled or channeled to form a suitable bearing surace or ball-race for the balls. By. preferare used and held at movement. re-adjust the ence, three balls 15 gagement with the pin 0, to swing forwardly- D, it is manifest that of the bcaring-b also evident that some career r ng h nger arms inbcaring against the following rule or formula for determining the outer tacos oi the plates,it being understoo position and points of connection of the hey oi course that these arins'o the hanger are l ov crsB and the supplemental levers Cand C.

more or loss resilient. it will be observed l Th 11 k w l f r s d On a,

, rr o D that the threaded stud 12" is pist snort b l d 1 11 th cnougnnotto come invcontact withthesidc 7 '1 v Q mm d, 1? d 1} 0w R mb 1f! oi ces multipl ed b the distances of mrlib M K ch OJ .points oi application rrorn the iulcruin are that the Plates and M h l i equal. that if T equal the operators apart by the threaded stud H independently touch, d S @1 f rce applied at pin 0', We

have B T=U S, where B ails theinsel r I q L am an are that li llEL: been heretofore dlsbances of the key and product of such VGS.

l f employ ball bearings mlcnne' ivot I). And ii S equalsthe force applied (hate the type bars and their hangers, the at the 9nd of p Q to tha p we have i 1 r I T "1| 1 4 u X first lirraalrnrl C a the r3 l v tance of link 9 and point 0 from fulcrum c. 5 y better l any that has Preceded m The force necessarv to operate the various since the bearing plates can be accurately adp q and type g are an equal Since 1 1 l fi f 7 each ll 9 bar i 1t Pl they are all ot equal lengtluthereiore we may 1 i 1 h 15 no danger 0 assume that the operators touch equals this disturbing tne an ustment oi. the parts when force or T z w p p if pivot is 10 c at e d the hanger is placed in position uponrts ironic. That is to say, the adjustment or call bearing is independent of and in no ailccl-ed by the means hin the hanger,

in bar 5, a unit oi length above the fulcrum b, then UXli it we substitute these values 111 the above given equations an for su) orting 1 will find that l) on... nor is it a footed by the means for securing he hangers to the typewriter frame, thus curing defects found to exist in prior structures.

in writing machines of the general the upright lovers are From this ivpe-bar wi so We we determine the necessary length oi the upper ortion b and the position of the point 0 for any length of lever B and ot supplemental lever C, to secure aperiect uniiorniity oi touch. Ant since a snniformula we may construction shown,

necessarily oi varying lengths. Those at the 1 c ti rela 1(11 exists t e. l e center of the machine are short and those at v be 3 en 1 .hsta'nces through which any portion or a pivoted lethe right and left gradually increase in length toward the extreme sides of the machine, (see Fig. l). Moreover, the horizontal hey levers, as shown in Fig. 2, very in length from the short levers in the highest bank of keys to the long levers in the lowest bank. it is of the short horizontal levers are necessarily united with some 0 the long upright levers and that some of the oi the above longer of the former are necessarily united to lf g -l 9 the pp y l-- But tne solution rormula will some oi the shorter of the latter. it there fore the key levers were iorined of single icces or if the points oi connection between the upper portions of the key levers am he supplementary levers were a at the same sometimes so locate the point 0, an I have iound it necessary to pivot some of the sup- )leinental key levers as C on bar 6 below the l v rulcrum b. in such case 0":1) winch their i on j H ois rnceslroni the pivots oi the latter, it is 11 change the formula to b g By obvious That such construction would result C'B in an uneven depression ol' the kovs aim an tho 1156 O t s quation 1 can get the length r. I uneven touch as well. To obviate this difof the upper )ortions b and the osition o r h 't" ti 1 t l s 1icuity,l make use oi compound key in ms, t e poin c or is supp eineir a overs that is the key levers B and the supplemental which are pivoted on bar 1), below the i'ul-' cr'uin bar 0' the key levers B. It is obvious l and U, mount certain or the supleinental levers on the lower pivot plate o,

my invention is ap licaand vary the lengths oi the separate coinole to typewriters oi various types an that union, abutnients or parts I) of the key leconnections oi varying lengths between the vers and thcrehv vary the distances oi t i linger keys and the type bars maybe su points of connections between such upper porl stitute-d for the preferred construction which l have illustrated and described.

formulas for the lengths of such connections could be readily deduced. I believe that l am the first to vary the lengths of such conin accordance with such a formula y which means I am enabled to sepivots of the supplementary tions and the lovers. By this construction a unitorinity in the action of the key levers is insured so that the amount of depression and the force necessarv to depress hem will be alike for all. In nections t accomplishing this obyect l preier to use the l or rule,

tageous when the key levers are to be used cure perfect uniformiggof touch and equal not merely for operating the type bars, but

depression for all the ger keys. I do not wish therefore to be limited to the details' of also for operating certain electric signal this preferred construction. transmitting mechanism such as shown in an t is frequently desirable (as for exam le ap lication Serial No. 46,580 filed 'by me when an perator tern orarily leaves his Fe ruary 8, 1901, butit is not deemed neceswork,) to t ow the type are of the machine sary to show herein the connection between out'of action so that they shall not respond the key levers and such transmitter mechanto any accidental or mischievous operation of ism.

, '10 the key levers. Inasmuch as the type bars In the very rapid @peration of typewriting 75 '15 out the slots or seats in the upper ends I) of to are operated by the key h \ers through the machines in which the type are carried upon medium of the su plemental levers C and C, pivoted bars, it'is often found that if two it will be seen t at if these supplemental type bars lying in juxtaposition he 0 erated levers be raised so as to lift their pins 0 from I in uick succession, there is danger of rl erence of the bars, this interference being the key levers, then the depression of the key due to the fact that as the type bar first levers will reduce no movement of the sup-' l struck falls upon the cushion pad, it rebounds plemental lgver s or of the tylpe bars. -In o'rsome distance therefrom and oftentimes into der to efiect this raising of t e supplemental the upward path of the ad acent type bar.

20 leversC and C, tothrow thet pe bars out of further ob ect of this invention is to ro- 25 Through the base of the main frame A eX- and this ob ect is preferably accomplished '30 connected by links 23 to the pairs of toggle other convenient position) is mounted aseries 35 while the lower ends of the toggle levers 25 upper end bears against an annular shoulder 40 toggle levers are shown in normal position shdin inovement of the plunger. The outer action, I prefer to employ t e mechanism V1 next to be described, reference being. had ty e bars that will solessen or prevent the more particularly to Figs. 1, 4', 8, 9 and 10 I rehbund of the ty e bars as to avoid all dan-, of the drawin ger of their interference in rapid. operation tend's a shaft 20 that carries u on its outer by the construction of pad or cushion more end a crank handle 21 whereby t e shaft may particularly shown in Figs. 2, 14 and 15 ofe turned by the operator. Upon this shaft thedrawings. Upon the semi-circularflan e 20 are fixed the '.cranks 22 that are pivotally a on the front plate of the main frame (or in levers 24 and 25 at the opposite ends of the of chambers f through which ass the plun comb-bar 3 and pivot bars 5 and 6. The n gers f, and within each cham er is laced a per ends of the toggle levers 24 are pivotally coil spring f the lower end of whic bears against the baseof the chamber f while its are pivotally connected as at 27 to the hanger f of the plunger f. Each chamber f ,is furplates 28 that are secured to and depend from nished with a ca f to retain -the lunger in the ends of the comb-bar 3. In Fig. 8, the position within t e chamber, and t e base of upper and lower pivot bars 5 and 6 and the each chamber is perforated to permit a slight and at such time the pivot ins c of the sup end 0 each plun er f carries a plate f and plemental levers C, C will lie in engagement upon the severa plates rests a cushion F, wit-h the upper portion 1) of the key levers U3. preferably of felt or like material, by which fnow, however, the o erator turn the crankthe free ends of the type bars D will. be sup- 45'handle 21 (see Fig. 1 in upward direction, ported when these bars are in their normal the shaft 20 will be rocked, thereby causing or idle position. its cranks 22 through the medium of the In practice I have found that a spring suplinks 23, to shift the toggle levers 24 and 25 l ported cushion such as just described, will from the position shown in Fig. 8 to the poprevent any serious rebound of the type bars 50 sition shown in Fig. 9, and this shift of the as they fal to normal position after the key 15 toggle levers will raise the pivot bars 5 and 6 levers are released. However I regard the and the supplemental key levers C and C construction shown as the most effective one until the pins 0 pass from engagement with known to me for the purpose, and it is ob-. the upper portion 1) of the key levers; hence vious that it may be varied Within wide 55 the depression of the forward ends of the key limits Without de arting from my invention, levers will have no effect u on the supplewhich presents, believe, the first instance =mental levers C and (1 or tie type bars D. ofa type bar cushion or rest having aspr ngy 3 reference to Fig. 9, it will be seen that I or yielding support that will avoid the serious v wh e rebound of the type bars.

60 to the position there sllown, they will be upon I Beneath the various key levers B extends or slightly beyond the vertical center, so that the front rod or plateG of the universal bar, they serve to temporarily hold the pivot bars the side arms of this universal her being and levers C and C in raised position. This, formed of rearwardly and upwardly extendfeature of throwing the type bars out of ac-- ing portions 9 and The side arms gof the 65- tion will also be found particularly advanuniversal bar are pivoted as at 9 (see Fig. 7)

is upper edge of irregular outline, that is to say,

884:,347 a to the comb-bar 3 adjacent its ends and to dotted lines it will not be affected by the the upper ends of the extension 9 of the downward movement of the key levers. universal bar are pivotally attached the for- Preferably, each of the extensions 36 is a ward ends of the links 9 the rear ends of spring metal plate or bar that is pivotally 5 which are connected with the escapement connected to the universal bar as shown in 70 mechanism whereby the movement of the the drawings, and engaging a notch 36 paper carriage is controlled. By reference therein, although any other suitable device to Fig. 6 of the drawings it willbe seen that may be used for this purpose. the front plate of the universal bar G has its Outside the side arms of the universal bar G and at each side of the machine extend the 75 space levers H, the rear ends of which are pivoted to the comb-bar 3 and the forward ends of which are connected by the space bar H. The space levers H rest above headed extensions h (se e Fig. 6) projecting laterally from 80 the universal bar so that as the space bar is moved *downward, acorres ending depression of the universal bar will occur in order to actuate the escapement mechanism of the machine. 35 In order to allow very accurate adjustment of the key levers with respect to the universal bar so that uniformity o touch will be insured, I prefer to provide each key leverwith an adjustable bearing plate I) that is pivoted 90 to the side of the key lever as at 37 (see Figs. 12 and 13), the forward end of the bearing plate b being provided with a slot through which passes a headed in 38 that projects from the side of the key l ver. A lug 39 pro- 95 jecting laterally from the key lever has a threaded hole to receive a set-screw 40 that bears u on alaterally projecting lug-4,1 at the top of t is plate I) ant by adjusting the screw 40, the plate b may be brought to the proper 100 distance from the universal bar to insure uniformity of depression for the various fingerthis edge is formed with a series of elevations and depressions ada ted to come beneath differenttype levers of the series. T he object in thus shapingthe front plate of the 15 universal bar is to compensate for the differ ences in the lengths of the front portions of the several key levers B. Thus by reference to Fig. 3 of the drawings, it will be observed that the front portions of the key levers are of four different lengths and from Fig. .6 it will be seen that the front plate of the uni versal bar'is formed throughout its length with four bearing points g 9, 9 different relative heights. The key levers B having the longest forwardly extending portions will rest upon the highest bearing points g while the key levers B having the shortest forwardly extending portions will rest upon the lowest bearing points 9 of the universa bar; and it will be understood that the intermediate key levers will rest upon the corresponding bearing points 9 and glof the universal bar. it will thus be seen that the arrangement of the bearing points upon the u iper edge of the front of the universal bar will allow the same extent of doiinwar movement to the keys of each key-lever regardless of their length, thus insuring unikeys. forinity of touch. lt is obvious that the llhe details of the carriage-mechanism and same object maybe obtained by providing j of the ribbon mechanism are not herein 105 the key-levers with pro ections of vary ng shown and described,but are setfortii in comlength to engage the universa bar, it being panion ap lications of evendate herewith. only necessar 1 that the normal distance be- From t e foregoing descri tion it will be tween the universal bar and each key-lever, observed that the upwardly irectedsuppletechnically called the drop shall vary in mental levers C and C constitute upright and in) accordance with the length of each lever. upwardly directed. sub-levers that vibrate Inasmuch as it is desirable to throw the fore and aft of the machine and are distinuniversal bar out of action at the same time "guished f from bell cranks, or. angle levers; that the type bars are thrown out of action that such bends as exist in said sub-levers are so by the mechanism hereinbefore described, lateral or side-wisebends-,that the sub-levers and more particularly illustrated in Figs, 8 at the sides of the system'are bent inwardly and 9 of the drawings, I prefer to provide or diverge from the system of type bars tothe side arms of the universal bar with the wards the system of independent key levers rearward extensions 36 that project over and B,.to compensate for the difference in width in proximity to or against the top of the upbetween the system of ty e bars and system 120 .per pivot bar Hence it will .be seen that of key levers; that the ed fulcrum, load when the upper pivot bar is lifted by shifting point and power omt, (or point c where the toggle mechanism from the position power is applied) 0 each sub-lever Cisinthe shown in ig. 8 to the po same or substantially the same vertical plane and that such planeextends transversely of 125 sition shown in Fi 9 as hereinbefore described, the pivot bar 5 the machine; that the ower points, 6a

points and fulcrums of ail .by its-contact with the extensions 36, will cause the universal bar to be rocked from the l of the sub-levers position shown by full lines to the position are in this same plane; that the member l) on shown bydott'ed lines in Fig. 7 and when the each key lever or key actuated lever B con- 65.nniversal bar is in the position shown by stitutes an upwardly errtpnding rigid projec 13o v 40 same in unison, wherebv said key-levers and 45-type-bars operated thereby, of mechanism mediate mechanism may be disengaged and locked in'the disengaged position. 1 In a ty ewriting machine, the comb ination with tne type-bars and with their core responding key-levers, of a series of pivoted supplemental levers provided with laterally ro ecting pins, notched off-sets on said keylevers en aging said pins, a movable support for the fuIcra of said supplemental levers and suitable means for shifting said sup ort for 75 isengaging said pins from said note ed olfsets. i

6. In ty ewritin machines, the combination'with t e type-bars and with their corresponding key-levers, of plural sets of pivoted suplplemental levers normally engaged by sar key-levers and eratively, connected to said type-bars, mova ly connected supports for the fulcra of said supplemental levers and suitable means for shifting said supports for isengaging said supplemental leversfrom said key-levers. v n ty ewritin machines, the combination with t e typears and with their corre sponding key-levers, of a series of supple- 90 mental levers normally engaged by said keylevers and operatively connected to said type tion that makes dire'et operative connection with its associ'ated'sub-lever C at c, and at a portion of the sub-lever that swings fore and aft of the machine in a horizontal or substan 5 tially horizontal arc that the connecting lin s 9 constitute draw or ull links between the series of sub-levers and the series of segmentally arranged ty e bars, which are pivoted. to swin upward y and rearwar'dly, and (I ms c on the sub-levers C con- --stitute latera y extending projections that enterislots in the u wardly extending projections 6 on the key livers B, so that one set of said levers (B and C) have laterallyiextend mg projections that enter slots 111 the other set of said levers.

I claim as new and desire o secure by Letters 1. In a typewriting machine, the combination with a series of key-levers and wit-h 2'5 type-bars operated thereby, of mechanism intermediate the key-levers and type-bars comprising a series of supplemental levers and suitable connections tierefor with the ey-lev'ers and type-bars, and meanscom mon to separate companion parts of said in- In a typewriting machine, the combination with the type-bars and their key-levers, of supplemental levers provided with 09 pins or offsets'adapted to engage with the ey-lever's and means for disengaging said ey-levers from said supplemental levers to t row the type-bars out of action.

9. In a ty ewriting machine, they combi- 105 nation with the type-bars and with their ivoted key-levers, 0t pivoted supplementa le vers in normal engagement wit said key, evers and means for shifting said supplemental levers to disengage them from said key 110 intermediate the type-bars and'key-levers evers.

c'omprisin a series of sup lemental levers ,10. In a ty ewriting machine, the combi and suitable connections tlierefor with the nation with the ty e-bars, o pivoted ke rey-levers and type-bars, and means comlevers provided witi slots, su )pleme'ntal lemon to separate companion parts of said invers rovided with pins or off sets g termediate mechanism for throwing the said s ots and means for shifting said supplesame in unison, said means comprising togmental levers to disenga e their ends or off-- gle levers shiftable on either side of a central sets from the key levers;

position, whereby the intermediate meehan- 11. i n a typewriting machine, the com'biism, may be disengaged and locked in the disnation with the tvpe-hars and thein pivoted ion. key-levers, of supplemental levers in normal 11 typewriting maehinse, the combil connection with said kev levers, a movable nation with a series of key-levers and with support for said supplemental levers and type-bars operated thereby, of mechanism means for shifting said sup )ort extending intermediate the type-bars and key-levers, "outside the main frame and suitally con- 12: and means common to separate companion nected to said support. parts of said intermediate mechanism for 12. In atypewriting machine,'the eo1nbithrowing the same in unison, said means nation with the type-bars and their pivoted comprising tog le levers shiftable on either 1 key levers, of supplemental levers in normal 5 side of a centr'a position, whereby the interconnection with said hey levers, a movable 13% 35 nation with aseriesof key-levers and with type-bars operated thereby, of a series of sup lemental levers suitably conneotedwith e ey-levers and type-bars, and means com mon to said supplemental levers to throw the type-bars are engaged or disengaged from it 3. In a typewriting machine, the combination with a series of key-levers and with asser support for said supplemental levers and means i r shitting said support comprising toggle lever mechanism connected therewith and a rock shaft connected to said toggle mechanism and extending outside the main lirame.

13. In a typewriting machine, the combi-. nation with the type-bars and with their key levers, oi plural sets of supplemental levers normally connected with said hey levers,

movable supports for said supplemental levers and toggle lever mechanism whereby said supports may be shifted in order to disconnect the supplemental levers from the key levers. I

id. in a typewriting machine, the combination with the type-bars and with their corresponding key-levers, of a series of pivoter sup lemental levers normally engaged by sair key levers, means for shifting the tulcra oi the supplemental levers to disengage said su plemental levers from the key levers, and lin 5 connecting said type-hars and said supplemental levers.

i In tront strike 'typeamiter, the mation with a series of horizontal key levers pivoted near the front. of the machine,

of a series of horiz ontal type-liars pivoter in the rear or and alrove the pivot-points for 39 said key-levers, a series o vertically dis posed supplemental levers pivoted adjacent the pivot-points of said key-levers, a u ments fixed to saidkeydevers, pin-and-slot connections between said a'hutments and said supplemental levers and a series of iorizontally disposed links pivotally connects to the upper ends of said supplemental levers and to the rear ends of said type-bars. I 16. In a. typewriting machine, the combi- 40 nation with the individual finger-keys having a common fulcrum and with the type-bars corresponding thereto, of a series of connections interposed between said keys and bars, the length of which connections are definitely 4.5 varied by rule to insure a depression and touc r for said finger-keys.

l7. Thecomlrination with the individual linger-key levers and with the type-b ars corresponding thereto, oi a series o pivoted connections lretween said kev'levers and bars,

the lengths 0% which connections are d eiinitel varied by rule to insure a uniform denressioii and touch tor the fingerdreys 18. The combination with the individual finger-key levers and with the type bars corresponding thereto, of a series of supplemental levers, lin rs connecting said supplemental levers' an said bars, a series oi corn nections between said hey levers and said 0 supplemental levers, the lengths of which connections are definitely varied o'y insure a unil'orm depression of the keys. 19.

nation linger ln a typewrit-ing machine, the combiwrth the individual finger-key levers of varying lengths and with the t pe bars corresponding thereto, of a series o'f'supplemental levers or varying lengths, links consaid supplemental levers and said bars, cl: a series. of connections between said hey-levers and said supplemental lovers, the length of each of which connections delinitely varied by rule relatively to the lengths of the corresponding k lever and supplemental lever to insure a uniform depression and touch for the finger-keys.

20. In a visible typewriting machine,

the combination with the individual lingerlrey levers of varying lengths and with the type bar corresponding thereto, oi a series of ivoted supplemental levers of varying lengths, linlrs connecting sai supplemental levers and said bars, of a series oi oftsets on said hey levers, pivotally enga ing said supplemental levers, the lengths oi which oitsets are definitely varied by rule to insure uniform depression ant tduch for the finger keys 21. In a typewrit-ing machine, the cornhination with a series of individual linger-keys and with a series of type-bars corresponding thereto, of operating mechanism intermediate said keys and bars, the lengths of the separate companion parts of said intermedi ate mechanism being definitely varied by rule to insure a uniform depression and touch for said finger-keys.

22-. In typewriting machines, the combi nation with the series of key-levers and. with the series of type-bars operated thereby, of intermediate mechanism operativel" necting said levers and ype-b of the separate companion anism being definitely vane by rul sure a uniform depression and touch fingerrlreys.

23. The combination with the seies "or key-levers and with the series of type-hers operated thereby, of mechanism intermedi ate said key-levers and type-bars comprising supplemental levers operatively connected. to said type-bars and said key-levers, the lengths of the separate compnnionparts said intermediate mechanism being nitely varied by rule to insure a uniform depression and touch for the finger-keys.

24. In typeivriting machines, the combination with a series of key-levers otverying lengths and with a series of type-bars corre spouding thereto, of operating 11 hanisin intermediate said key-levers and bars, the lengths or the separate companion parts of? said mechanism being varied relatively to the lengths of the corresponding heydevers to insure a uniform depression and touch for tl fin erdrevs.

ihe comhinatio' hars, of a set of opera o? t upound let u therefor, each comprising a pwoteil supple mental lever and a pivoted key-lever directly arranged at d fferent points back of sai cushsupported cushion.

posi- I 'usted osition, a han er and a pin assi f engagement between reely t rough said ad ustable (plate or supand supplemental levers being defiporting said type-bar uponsai hanger.

rule to insure a uniform d e- 4 35. T

er-keys. vided with an annular ball-race,

balls, a plate adjustably held retainin engaging said supplemental lever, the tion of anti-friction in position for bars, of a set of operating compound levers said balls within said race, means therefor, each comprising a pivoted supplejindepen ent of the balls for hold ng said mental lever and a pivoted key-lever havin plate in adjusted position, a hanger and a direct pin-and-slot connection with sait l j means independent supplemental lever, the position of said conadjustment for supporting said g pins being definitely varied by rule upon said hanger.

' depression and touch for 36. The combination of a type-bar proj videcl with an annular ball-race, anti-friction I i s, an adjust for retaining said -7. In a typewriting machine, the combination with the series of key-levers and with t 1e series of type-bars operated therefrom, of the series of supplemental levers operatively connected to said key-levers and type-bars, a universal space-bar in operative relation to said keyJeVers, and suitable means common to said supplemental levers and said space-bar for shifting the same in unison. vided with an annular ball-race, anti-friction I machine, the combiballs,'an adjustable plate for retainin nation with typebars, the key levers and ball d e universal bar, 0 supplemental levers intermediate the type-bars and key-levers, a movable support for a 7 mental levers in order to eliect the disengage- 38.- ment of the key-l lls for holding said plate in adjusted position, a hanger provided with arms separate from said late and means independent of saidadjusta le plate for bar between said arms. 37. The combination of a type-bar proable support in order to throw tl bar out of operative position.

29. In a typewriting machine, a rest for the free end of a tvpear comprising a springmeans for supportlnf type-bar between sai arms. n a typewritmg machine, the eombrbars,

69. Tl combination cushion or support an ion or suppd'rt. I n a typewriting machine, a rest for the free ends of the ty e-bars comprising a cushion or support, a p urality of springs ar-- wlt ot'said cushion or sup ort and te said position between salt or retaining w ereon san a type-bar propassing freely ball-race,-anti-friction t e type-bar in a s, an ad ustable plate for retaining said 42. Th

hm said race, means independent of bearing-balls for holding said plate in adposition between said arms. e combination of a type-bar provided. with a ball chamber at its inner end avmg a groove or channel to receive antihin said race, means independent of support ng said 1e 'port provided with arms, of a type-bar hav- A e combination of a type-bar proa iriction balls, a plurality oi balls within said plates.

lar ball-race, and a type bar ivoted to swing chamber, screw-threaded bearing plates avin the median plane oi said ball-race and proin eripheral bear ng suriaces to engage vided with an annular ball-race arranged 0 'said balls, a pm passing through said bearing )osite the ball-race oi the hanger, the side lates, a hanger for supporting said pin, and wall of one oi said ball races being iormed oi a stud on said pm upon which said bearing a plate separate irom the body oi said hanger plates are threads or oi said type-bar and adjustable to diiier- '43. The combination with a suitable ent planes parallel to the plane oi the ballhanger or support, oia type-bar provided at race and means independent oi the balls for its inner endw th a ball chamber, antr-irrcholding said plate in adjusted position. tion balls Within said chamber, adjustable 49. The combination oi aty e-bai' hanger, bearing plates having peripheral suriaces to a type-bar, one oi said members having an engage said balls,,a stud whereon sai bearinteriorly grooved eye and the other of sair mg lates are ad ustably mounted and a members being cleit or bifurcated and emspace plate arranged between said bearing bracing said eye, an exteriorly groove hub p ates and engaging said balls to retain them within said eye, a series oi bearing alls in at distances apartthe race iormed by said grooves, one of said 44=. The combination ,oi a ty e-bar rohub-and-eye elements having an adjustable vided at its inner end with a bal chain er, section i'ormed se arate from the body oi balls wnthm said chamber, a space either oi said mem ers and constituting one late engaging said balls to hold them at distances a art, bearing plates arranged at opposite sides of said space-plate, and having peri ieral bearing surfaces ior said balls, a typear hanger provided with arins between wiich said bearing plates an said space plate are held, means independent oi said balls for holding said bearing plates apart and a pin passing through said hanger arms an through said bearingplates and space plate.

position and a pin su porting in adjusted the arms oi said bi urcated said hub between member,

50. The combination oi a type-bar hanger. a type bar, one 0 said members having an eye, a hub within said eye, a supportioi' -50- curing said hub upon the other oi said members, a ball-race intermediate said eye and hub anti-iriction balls in said. race, one o" 45.,The combination oi a ty e ar rovided at its inner end with a bal chain er, and hub and eye elements having a separaballs within said chamber, bearing plates ble plate section adjus a ly mounted for having! peripheral surfaces to enga e said llOldlll said balls within saidraie, the adballs, at ty -bar han er having arms beustrnen of said plate section sing indetween Whidh said bearing plates and said endent oi saidsuppcrt and means inde endent of said bearing-balls for holding said plate section in adjusted position. 7

51. The combination oi a type-bar hanger,

one oi said members having an 'andtheother oi, said members being cleit or bifurcated to embrace said eye, a hub bearing plates pin extending through the arms apart and a o' nd through said bearing said hanger plates.

. 46. The combination with a hanger irame,

oi a type-bar hanger having a slotted end, an arrange Within said eye, a ball-race and adjusting screw passin through the slotte balls intermediate said eye and hub, a pin or end oi the type bar -anger and into the 'su port extending between the arms oi said han er irame, the opposite end oi,said typecleit or biiurcate member and renting Salli. bar iian er being provided with arms, a typearms to said hub, an adjustable plate iorm barjournaled between the armso the han er ing a part oi one 0 said hub-andeye elements and constituting a wall oi said allrace, said plate being arranged between the arms oi the biiurcated member and being adjustable independenly thereoi and means independen oi said balls ior holding sai plate in adjusted position. 52. The combination with a type bar and having a ball-bearing suriace, bearing lates interposed between said'hanger arms and balls between said bearing plates and the type-bar.

i i7 .b'i ihei3 combipation A t ear, anger iaving a pa y? oi atype-bar journaled between said irom the body as. An anti iriction bearing ior type bars i abie'sectiog iormed separate comprising a nan ger provided with an annwi or either 01 d constituting arms arms and having a ball-bearing chamber, I hanger, a type bar, one oi said members hav- 12o bearing-plates separable irom but interposed ing an interiorly grooved eye and the other between said hanger arms means independoi said members being cleit or 'oiiurcated and ent 0i said balls for holding said .bearin embracing said eye, an exteriorly grooved plates a art and anizl iriction balls. located hub Within said eye, a series oi bearing-balls in said all chamber between said bearingi in the race formed by said grooves, one oi r25 said hub-and eye elements having an adjustone of the side walls of the ball-race and a cleft or bifurcated to embrace said eye, a hub mount whereon said section is adjustably arranged within said eye, a ball-race and threaded. I earing balls intermediate said eye and hub, 53. An anti-friction bearing for type-bars a support exteiding between the arms of said comprising/a hanger provider with an annucleft or bifurcated member and uniting said lar ball-race, a type ar pivoted to swing in arms to said hub, a plate forming a part of t e median plane of said ball-race and proone of said hub and eye elements and advided with an annular ball-race arran ed 0 justably threaded in positionand means for posite the ball-race of the hanger, t e si e lockin said plate in adjusted position.

wal of one of said ball-races being formed of 59. n a front strike writing machine, the 75 an adj ustable plate and a mount whereon combination with a platen, of a series of rearsaid p ate is ad ustably threaded. wardly striking type bars, a series of key 54. The combination with a type bar I hanger having a pair of arms, of a type-bar arms, a series of sub-levers with which said having at its pivotal end a ball race, ant-iarms engage, and aseries of links or connect- 80 between the arms of said hanger. wardly striking type bars, a series of u right plates for holding said bal ment with the outer arms of said plates to connected by links to the type ars, and aseand the other of said members being cleft or posed plates arranged within raid eye and said arms to hold the same in frictional enteriorly grooved eye forming a ball-race and balls within said race and a pair of oppoin frictional engagement with said ad ustable ever. I q 125 plates, whereby said plates are locked in ad- 66. In a typewriting machine, the combiusted osition. nation 'of aplaten, a segment below the 58. The combination of a type-bar hanger, platen, a series of front str ke-t pe bars piv- 55 eye and the other of said members being levers extending from theirrespective type friction balls, a plate for holding said balls in mg rods between the type bars and the upper position w thin said race, a mount whereon ends of said sub-levers. said plate is adjustably threaded and means 60. In a front strike writing machine. the

for supporting said type-bar andsaid plate combination with a platen, of a series of rear- 55. The combination with a hanger orsupsub-levers, draw-links connecting sai subport provided with a pair of arms, of a typelever and t pe bars, and a series of key levers ar avingat its pivotal end a ball-race, antiprovided with upwardly directed members friction balls, a pair of oppositely disposed which engage and actuate said sub-levers.

s in position with- 61. n a front strike writing machine, the in said race, a stud whereon said plates are combination with a platen, ofaseries of rearing said p ates for holding said arms into frictional engageshaped arrangement at their u per ends and 00k the latter into adjusted position. ries of key evers provided with upright 1e combination of a type-bar hanger, niem bers arranged to engage and directly aca type bar, one of said members having an tuate said sub-levers. interiorly grooved eye forming a ball-race 62. n a front strike writing machine, the combination witha platen, of a series of rearwardly striking type bars, a series of upright sub-levers of graduated lengths, a series of draw links connecting said sub-levers and said type bars, and a series of key levers havin upright portions to connect with said su evers. 1

63. In a front strike writing machine, the combination of a ty e bar, an u right subfurcated to embrace said eye, a support extending between and through the arms of said cleft or ifurcated member, bearing balls Within said race and a pair of oppositely disupon said su port to hold said balls in place, one of said p ates being adjustably threaded type bar, and a key lever having an upright projection to engage said upright sub-lever.

64. In a typewriting machine, the combination with a type bar arranged to swing upwardly and rearwardly, of a substantial y straight upright sub-lever, a link connecting the upper end of the sub-lever with the type bar, and a key lever having a projection-engaging the said su b-lever.

65. n a typewriting machine, the combination with a type bar arranged to swing u psitely disposed plates arranged within saidwardly and rearwardly, an upright sub-lever, eye and ad justably threaded on said su port, a link connecting the upper end of the subthe ends of said support beingheaded over on lever with the t 'pe bar, and a he r lever havthe outer faces of said arms to hold the latter it pin-and-s 0t connection with the said agement with said adjustable plate, wherey the latter is locked in adjusted position.

57. The combination of a type-bar hanger,

a type-bar, one of said members having an inthe other of said members being cleft or bifurcated to em race said eye, a support extending between and through theiarms of said cleft or bifurcated member, bearing a type-bar, one of said members havi g an oted on segment, a serieso upright subbars to their respecrive key levers, and a levers that have upwardly extending rigid series of key levers having pin-and-slot conprojections which cooperate directly with the nections with said sub-levers. sub-levers and make operative connections 67. In a typewriting machine, the combitherewith at points in the sub-levers that, nation of a series of type bars, a series of upswing fore and aft of the machine in arcs right pivoted sub-levers, the series being whose chords are substantially horizontal. shortest in the middle and gradually increas- 73. In a front strike 'typewriting machine, ing in'length towards the sides of the, series, a the combination of a series of segmentally series of links between the type bars and thei arran ed upwardly and rearwardly striking in sub-levers, and a series of key levers -directly type ars, a seriesof sub-levers pivoted on engaged with said series of sub-levers. fixed centers, and a series of independent 68. In a typewriting machine, the conibikey actuated levers operatively connected nation of a series of upwardly and rearwardly to said sub-levers, the load points, fulcrums striking type bars, a series of operating links and power points of said sub-levers being 5 connected thereto, and a series of substansubstantially in a single plane and in a subtially upright sub-levers also connected to stantially vertical plane extending transsaid links at their upper ends, and a series of versely oi" the machine. key levers directly engaging said series of 74. In afront-strike typewriting machine, sub-levers, the said series 0 sub-levers at the combination of a series of segmentally 20 their lower ends being substantially co-extenarranged upwardly and rearwardly striking sive in width with the series of key levers and type bars, a' series of sub-levers pivoted on at their upper ends substantially co-exten fixed centers, a series of links between said sive in width with the pivotal ends of the systype bars an sub-levers, and a series 0 tern of type bars. independent key-actuated levers operatively 25 69. In a typewritingmachine, the coinbiconnected to said sub-levers, the load points,

nation of a segment, a series of type bars pivfulcrunis and power points of said sub-levers otally mounted in an arc shaped arrangement being substantially in a single plane and in a about said segment, aseries of upright pivoted substantially vertical plane extending transsub-levers, the upper ends of which are arversely of the machine. 30 ranged in an arc and in substantial alinernent 75. In a front strike typewriting machine,

fore and aft of the machine with the series of the combination of a series of segm'entally type bars,c0nnecting links between the upper arranged upwardly and rearwardly striking ends of the sub-levers and the type bars, a ty e bars, a eries of sub-levers pivoted on series of key levers having projections to enfixed t rs, and a series of independent 35 gage the said series of sub-levers, the series 0 k y l v r whi h hav wardly t di Sub-levers their lower ends being 'SUbSt/aH- projections that make operative connection tially co -extensive in width with the series 0 with said sub-levers, the load points, 'fulkey levers. crums and power points of said sub-levers 70 In atyppwriting machine, the combeing substantially in a single plane and in a 40 ma lon with a platen, of a typ bar n substantially vertical plane extending transranged to swing upwardly and rearwardly,

versely of the machine. Connectmg Tod, p g 76. In a front strike typewriting machine, lateral pin PYOjBOBIOII thereon, n a k y the combination of a series of segmentally' lever provided with an upwardly directed arran ed upwardly and rearwardly striking type ars, a seriespfsub-levers pivoted on 5 device which engages said pin or projection.

fixed centers, a series of draw links between said type bars and'sub-levers, and a series 0 71. In a front strike typewriting machine, the combination of a series of segmentally arranged upwardly and rearwardly striking independent key levers which have u pivoted type bars, a series of upright subwardly extending projections that ma e 50 levers that swing fore and aft of the machine, operative connection with said sub-levers,

and a series of independent key levers that the load points, fulcrum and power points of saidsub-levers being substantially a have upwardly extending projections whic cooperate directly with the sub-levers an single plane and in a substantially vertical make operative connection therewith at plane extending transversely of the machine. 55 points on the sub-levers that swing fore an aft of the machine in substantially horizontal arcs. 72. In a front-strike typewriting machine, the combination of a series of segrnentally 60 arranged upwardly and rearwardly striking pivoted type bars, a series of upright sublevers that swing fore and aft of the machine, 1

link connections from said type barsto-sai sub-levers, and a series of independent key 77. In a front strike typewriting machine, the combination of a series of segmentally arran ed upwardly and rearwardly striking type ars, a series of sub-levers'pivoted on fixed centers, and a series of independent keyactuated levers o eratively connected to said sub-levers, the oad points, fulcrurns and ower oints of said sub-levers beingisube stantia y in a single plane and in asu 'stantially vertical plane extending transversely 

